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Luda [366]
3 years ago
9

Find the difference: v20-v180

Mathematics
1 answer:
abruzzese [7]3 years ago
3 0

Answer: -2√5

Step-by-step explanation:

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If a and b are two angles in standard position in Quadrant I, find cos(a+b) for the given function values. sin a=3/5and cos b=12
insens350 [35]

You have to find the cos of angle A, so use the Pythagorean equation and trig laws to find the other side of the triangle created by angle A. 3^2 + x^2 = 5^2. x=4. This means cos(A) = 4/5). Make both cos (A) and cos (B) have equal denominators, and add. 148/185 + 60/185 = 208/185. This answer is correct, though it doesn’t appear to be any of the answers you wrote, so either those answers are wrong or you wrote something incorrectly in the problem.

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alex41 [277]
17.2 celcius

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3 years ago
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I need to find the measure of angle LMN.
sergiy2304 [10]
Notice the circle, the radius NM or ML is 5, and the arc the angle makes is 14.3 cm, thus

\bf \textit{arc's legnth}\\\\
s=\cfrac{\pi \theta r}{180}\quad 
\begin{cases}
r=5\\
s=14.3\\
\theta =angle~in\\
\qquad degrees
\end{cases}\implies 14.3=\cfrac{\pi \theta 5}{180}\implies \cfrac{14.3\cdot 180}{5\pi }=\theta
3 0
3 years ago
Pls anwers pls friend fast pls
Natalija [7]

Answer:

(b) (a) (d) (a) (c)

Step-by-step explanation:

(i) The probability of an even card is 1/2 because the number of even cards and odd cards are the same so there is a 50% of getting an even card. (b)

(ii) Since the card is replaced, there is still a card for all numbers between 1-20. There are 8 prime numbers and 20 cards so the probability of getting a prime number is 8/20 or 4/10 or 2/5. (a)

(iii) The card was not replaced so there are only 19 cards and there are only 5 numbers that are multiples of 3 and greater than 4. The probability must be 5/19. (d)

(iv) A sure event means that it will happen 100%. So P(A) = 1 since the number one represents 100%. (a)

(v) All cards have replaced and there is only one number that is a multiple of 3 and 5 which is 15. 1 card out of 20 is a desired outcome so 1/20 is the probability. (c)

7 0
3 years ago
5 times a number increased
Brrunno [24]

Answer:

18

Step-by-step explanation:

Let's make this information into an equation.

We'll use 'x' whenever the problem says "a number".

Equation:

5x + 18 = 36 + 4x

How did I get to this equation?

  • 5 times a number means 5 multiplied by x
  • increased by 18 means to add 18
  • is the same as means equals
  • 36 more than means to add 36
  • 4 times the number means 4 multiplied by x

Now, let's solve.

Solve:

5x + 18 = 36 + 4x

Subtract 18 on both sides:

5x + 18 = 36 + 4x

     -18     -18

5x = 18 + 4x

Subtract 4x on both sides:

5x = 18 + 4x

-4x        -4x

x = 18

Therefore, "the number" is 18.

4 0
3 years ago
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